Atomic partitioning of ruthenium in Ni-based superalloys

S. Tin; A. C. Yeh; A. P. Ofori; R. C. Reed; S. S. Babu; M. K. Miller

doi:10.7449/2004/superalloys_2004_735_741

Atomic partitioning of ruthenium in Ni-based superalloys

S. Tin
, A. C. Yeh
, A. P. Ofori
, R. C. Reed
, S. S. Babu
, M. K. Miller

Research output: Contribution to conference › Paper › peer-review

30 Scopus citations

Abstract

The elemental partitioning characteristics of Ru additions within the microstructure of high refractory content Ni-base single crystal superalloys have been investigated using atom probe tomography (APT). Although detailed microanalysis revealed some dissolution of Ru within the ordered intermetallic γ′ precipitates, Ru was observed to preferentially partition to the disordered γ matrix. The partitioning characteristics of two nominally similar alloys with and without Ru were studied as part of this investigation. Analyses indicate that no significant changes in the partitioning characteristics of the constituent elements could be attributed to the presence of Ru for this particular set of alloys. The preferential site occupancy of Ru within the L1₂ lattice was also statistically quantified using ALCHEMI (atomic site location by channelling enhanced microanalysis). Interestingly, Ru exhibited a tendency to substitute for Al and occupy the corner sites in the γ′ structure.

Original language	English (US)
Pages	735-741
Number of pages	7
DOIs	https://doi.org/10.7449/2004/superalloys_2004_735_741
State	Published - 2004
Externally published	Yes
Event	SUPERALLOYS 2004 - Tenth International Symposium on Superalloys - Champion, PA, United States Duration: Sep 19 2004 → Sep 23 2004

Conference

Conference	SUPERALLOYS 2004 - Tenth International Symposium on Superalloys
Country/Territory	United States
City	Champion, PA
Period	9/19/04 → 9/23/04

Keywords

Atom Probe and ALCHEMI
Partitioning
Ruthenium
Single crystal

ASJC Scopus subject areas

General Materials Science

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10.7449/2004/superalloys_2004_735_741

Cite this

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title = "Atomic partitioning of ruthenium in Ni-based superalloys",

abstract = "The elemental partitioning characteristics of Ru additions within the microstructure of high refractory content Ni-base single crystal superalloys have been investigated using atom probe tomography (APT). Although detailed microanalysis revealed some dissolution of Ru within the ordered intermetallic γ′ precipitates, Ru was observed to preferentially partition to the disordered γ matrix. The partitioning characteristics of two nominally similar alloys with and without Ru were studied as part of this investigation. Analyses indicate that no significant changes in the partitioning characteristics of the constituent elements could be attributed to the presence of Ru for this particular set of alloys. The preferential site occupancy of Ru within the L12 lattice was also statistically quantified using ALCHEMI (atomic site location by channelling enhanced microanalysis). Interestingly, Ru exhibited a tendency to substitute for Al and occupy the corner sites in the γ′ structure.",

keywords = "Atom Probe and ALCHEMI, Partitioning, Ruthenium, Single crystal",

author = "S. Tin and Yeh, \{A. C.\} and Ofori, \{A. P.\} and Reed, \{R. C.\} and Babu, \{S. S.\} and Miller, \{M. K.\}",

year = "2004",

doi = "10.7449/2004/superalloys\_2004\_735\_741",

language = "English (US)",

pages = "735--741",

note = "SUPERALLOYS 2004 - Tenth International Symposium on Superalloys ; Conference date: 19-09-2004 Through 23-09-2004",

}

TY - CONF

T1 - Atomic partitioning of ruthenium in Ni-based superalloys

AU - Tin, S.

AU - Yeh, A. C.

AU - Ofori, A. P.

AU - Reed, R. C.

AU - Babu, S. S.

AU - Miller, M. K.

PY - 2004

Y1 - 2004

N2 - The elemental partitioning characteristics of Ru additions within the microstructure of high refractory content Ni-base single crystal superalloys have been investigated using atom probe tomography (APT). Although detailed microanalysis revealed some dissolution of Ru within the ordered intermetallic γ′ precipitates, Ru was observed to preferentially partition to the disordered γ matrix. The partitioning characteristics of two nominally similar alloys with and without Ru were studied as part of this investigation. Analyses indicate that no significant changes in the partitioning characteristics of the constituent elements could be attributed to the presence of Ru for this particular set of alloys. The preferential site occupancy of Ru within the L12 lattice was also statistically quantified using ALCHEMI (atomic site location by channelling enhanced microanalysis). Interestingly, Ru exhibited a tendency to substitute for Al and occupy the corner sites in the γ′ structure.

AB - The elemental partitioning characteristics of Ru additions within the microstructure of high refractory content Ni-base single crystal superalloys have been investigated using atom probe tomography (APT). Although detailed microanalysis revealed some dissolution of Ru within the ordered intermetallic γ′ precipitates, Ru was observed to preferentially partition to the disordered γ matrix. The partitioning characteristics of two nominally similar alloys with and without Ru were studied as part of this investigation. Analyses indicate that no significant changes in the partitioning characteristics of the constituent elements could be attributed to the presence of Ru for this particular set of alloys. The preferential site occupancy of Ru within the L12 lattice was also statistically quantified using ALCHEMI (atomic site location by channelling enhanced microanalysis). Interestingly, Ru exhibited a tendency to substitute for Al and occupy the corner sites in the γ′ structure.

KW - Atom Probe and ALCHEMI

KW - Partitioning

KW - Ruthenium

KW - Single crystal

UR - https://www.scopus.com/pages/publications/23744458107

UR - https://www.scopus.com/pages/publications/23744458107#tab=citedBy

U2 - 10.7449/2004/superalloys_2004_735_741

DO - 10.7449/2004/superalloys_2004_735_741

M3 - Paper

SP - 735

EP - 741

T2 - SUPERALLOYS 2004 - Tenth International Symposium on Superalloys

Y2 - 19 September 2004 through 23 September 2004

ER -

Atomic partitioning of ruthenium in Ni-based superalloys

Abstract

Conference

Keywords

ASJC Scopus subject areas

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